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Nonprofit · EIN 47-5497499

MAMABU

Tax-exempt · SAN DIEGO, CA 92130

Address and contacts

Address (IRS master file)
13793 ROSECROFT WAY, SAN DIEGO, CA 92130-5107
Mailing address (990-N for 2025)
13793 Rosecroft Way, San Diego CA 92130
Principal officer (990-N for 2025)
Shanshan Ma, 13793 Rosecroft way, San Diego CA 92130

California records

California keeps its own records of charities and corporations. Search them by EIN 47-5497499 or by the name MAMABU.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for MAMABU

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
47-5497499
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2016
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Human services (P27)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Shanshan Ma
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Shanshan Ma
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Shanshan Ma
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Shanshan Ma
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Shanshan Ma
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Shanshan Ma
December 31, 2019≤ $50,000 receipts––e-Postcard
990-N for 2018
Officer: shanshan ma
December 31, 2018≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 47-5497499).

Questions about MAMABU

What is the EIN of MAMABU?
The employer identification number (EIN) of MAMABU is 47-5497499.
Is MAMABU tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2016.
Are donations to MAMABU tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MAMABU file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MAMABU due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MAMABU last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of MAMABU?
The 990-N for 2025 names Shanshan Ma.

Other nonprofits in SAN DIEGO

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